Method and device for measuring motor bandwidth

Abstract

An embodiment of the invention relates to the technical field of electronic equipment, and discloses a method and device for measuring a motor bandwidth. The method comprises the following steps of S1: acquiring an initial motor model parameter of a load motor; S2: acquiring a displacement equalizer parameter of the load motor according to the initial motor model parameter, acquiring a test signalfor testing the performance of the load motor according to the displacement equalizer parameter, and generating a new motor model parameter according to the test signal; S3: judging whether the new motor model parameter satisfies a preset requirement, if so, acquiring a motor characteristic physical quantity used to characterize the motor displacement level according to the test signal generatingthe new motor model parameter, and acquiring the bandwidth of the load motor according to the motor characteristic physical quantity; and if not, taking the new motor model parameter as the initial motor model parameter, and repeating the step S2 until the new motor model parameter meets the preset requirement. The method and device for measuring the motor bandwidth provided by the invention canimprove the measurement accuracy while reducing the difficulty of measuring the motor bandwidth.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electronic equipment, and in particular to a method and device for measuring bandwidth of a motor. Background technique [0002] With smart phones, tablet computers and other electronic devices as the carrier, the touch feedback function brings users a multi-level and multi-dimensional touch interaction experience. Typical examples include: vibration experience related to short message and incoming call notification; alarm clock and calendar reminder vibration experience; low battery reminder vibration experience; vibration experience related to movie and game plots. Linear motors are the core components that provide touch feedback functions. As the requirements for tactile effect design continue to increase, it is necessary to have a deeper and more accurate understanding of the performance of the linear motor itself. In many movies and games, the richness and realism of the tactil...

AI Technical Summary

Problems solved by technology

[0003] The inventors found that there are at least the following problems in the prior art: the motor vibrator is packaged in the motor shell, and the dynamic displacement of the motor vibrator cannot be directly measured, which makes it more difficult to measure the bandwidth of the motor; the linear motor will heat up under long-term signal excitation , causing the motor parameters to change out of the linear working area, so that the frequency response model of the motor is no longer a linear system, resulting in low measurement accuracy of the motor bandwidth

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